Alpha Vantage at https://www.alphavantage.co/query serves stock, forex, and crypto data. Every call is function= plus parameters. The demo key works for the IBM examples in its docs.
Get a free key at alphavantage.co and pass it as apikey. The free tier allows a small number of calls a day.
Full reference: https://www.alphavantage.co/documentation/
curl "https://www.alphavantage.co/query?function=GLOBAL_QUOTE&symbol=IBM&apikey=demo"{
"Global Quote": {
"01. symbol": "IBM",
"02. open": "233.7700",
"03. high": "237.8600",
"04. low": "232.5300",
"05. price": "232.7850",
"06. volume": "4535871",
"07. latest trading day": "2026-09-23",
"08. previous close": "231.3800",
"09. change": "1.4050",
"10. change percent": "0.6072%"
}
}curl "https://www.alphavantage.co/query?function=OVERVIEW&symbol=IBM&apikey=demo"{
"Symbol": "IBM",
"AssetType": "Common Stock",
"Name": "International Business Machines",
"CIK": "51143",
"Exchange": "NYSE",
"Currency": "USD",
"Country": "USA",
"Sector": "TECHNOLOGY",
"Industry": "INFORMATION TECHNOLOGY SERVICES",
"Address": "ONE NEW ORCHARD ROAD, ARMONK, NY, UNITED STATES, 10504",
"OfficialSite": "https://www.ibm.com",
"FiscalYearEnd": "December",
"LatestQuarter": "2026-06-30",
"MarketCapitalization": "217991070000",
"EBITDA": "16473000000"
}